Ivalvu yokujonga: Ivalvu yokukhangela ikwaziwa njengevalvu yendlela enye okanye ivalvu yokukhangela, umsebenzi wayo kukuthintela i-medium kwipayipi i-Backflow. Ivalvu esezantsi yepompo yokuvala amanzi ikwakwicandelo levalvu engabuyiyo. Ivalvu evula okanye ivala yodwa ngokuhamba kunye namandla e-medium ukuthintela i-medium ukuba ingabuyeli umva ibizwa ngokuba yivalvu yokukhangela. Iivalvu zokukhangela zikwicandelo leevalvu ezizenzekelayo. Iivalvu zokukhangela zisetyenziswa kakhulu kwimibhobho apho i-medium ihamba kwicala elinye, kwaye ivumela i-medium ukuba ihambe kwicala elinye ukuthintela iingozi. Ngokwesakhiwo sevalvu yokukhangela, inokwahlulwa ibe ziintlobo ezintathu: ivalvu yokujonga yokuphakamisa, ivalvu yokujonga yokujikeleza kunye nevalvu yokujonga yebhabhathane. Iivalvu zokujonga yokuphakamisa zinokwahlulwa zibe ziintlobo ezimbini: iivalvu zokujonga ezithe nkqo kunye neevalvu zokujonga ezithe tye. Iivalvu zokujonga yokujikeleza zahlulwe zibe ziintlobo ezintathu: ivalvu yokujonga eneqabunga elinye, ivalvu yokujonga esebenza kabini kunye nevalvu yokujonga eneqabunga elininzi. Ivalvu yokujonga yebhabhathane yivalvu yokujonga ethe tye. Iivalvu zokujonga ezikhankanyiweyo apha ngasentla zinokwahlulwa zibe ziintlobo ezintathu ngendlela yoqhagamshelo: ivalvu yokujonga enemisonto, ivalvu yokujonga ejiyileyo kunye nevalvu yokujonga ejiyileyo.
Ukufakelwa kwevalvu yokukhangela kufuneka kuthathelwe ingqalelo oku kulandelayo: Musa ukwenza ivalvu yokukhangela ibe nobunzima obuphezulu kumbhobho, kwaye ivalvu yokukhangela enkulu kufuneka ixhaswe ngokuzimeleyo ukuze ingachaphazeleki luxinzelelo oluveliswa yinkqubo yemibhobho.
Xa ufaka, qwalasela indlela ohamba ngayo amanzi aphakathi kufuneka ihambelane nendlela utolo oluvotelwe ngayo ngumzimba wevalvu.
Ivalvu yokujonga ethe nkqo yohlobo lokuphakanyiswa kufuneka ifakwe kumbhobho othe nkqo. Ivalvu yokujonga ethe nkqo yohlobo lokuphakanyiswa kufuneka ifakwe kumbhobho othe nkqo.
Iiparamitha eziphambili zokusebenza kwevalvu yokujonga: Uxinzelelo oluqhelekileyo okanye inqanaba loxinzelelo: PN1.0-16.0MPa, ANSI CLASS1 50-900, JIS 10-20K, ububanzi obuqhelekileyo okanye i-caliber: DN15-900.
I-NPS 1/4-36, indlela yoqhagamshelo: i-flange, i-butt welding, i-thread, i-socket welding, njl.njl., ubushushu obufanelekileyo: -196℃-540℃, izinto zomzimba wevalvu: WCB.
ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8 (304), CF3 (3041), CF8M (316), CF3M (316L), Ti, khetha izinto ezahlukeneyo, iivalvu zokujonga zingasetyenziselwa amanzi, umphunga, ioyile, i-nitric acid, i-acetic acid, i-oxidation Sexual media, i-urea kunye nezinye izinto.